intro to plants - lecture 5 Flashcards
1
Q
What is the main reason to study plant development?
A
- feeding a growing population
- 9.6 billion people in 2050 ( grain production must double)
2
Q
what did crops used to be like?
A
The crops were much larger , longer stem act
3
Q
What did the green revolution do?
A
- dwarfing of wheat and rice
- cheap fertilisers ( Nitrogen , pesticides, mechanisation , irrigation)
- rht ( reduced height genes)
4
Q
When and where did the green revolution begin?
A
Mexico, 1943
5
Q
Why is the yield increase plateauing?
A
- feed a growing population
- by 2030 need to produce 50% more food
6
Q
What plants to study?
A
- angiosperms; 352,000 species
- Arabidopsis thaliana
7
Q
why is Arabidposis thliana the best plant to study?
A
- 6-8 weeks sees to sees
- 5 chromosomes pairs
- 27,000 genes
